Single-phase induction motor exciting current proportional-integral (PI) control parameter adjusting method
A single-phase induction motor and control parameter technology, applied in the estimation/correction of motor parameters, AC motor control, control system, etc., can solve the problem that the excitation current control performance is difficult to meet the requirements, the controller parameter adjustment is blind, and the excitation current cannot be adjusted. Control and other issues to achieve good static and dynamic performance, high accuracy, and strong purpose
Active Publication Date: 2013-12-04
舜华电气(昆山)有限公司
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Therefore, the adjustment of the controller parameters is relatively blind, the debugging of the excitation current control system of the single-phase induction motor is time-consuming and laborious, the excitation current control performance is difficult to meet the requirements, and some even cannot control the excitation current at all.
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[0025] A method for adjusting the control parameters of the excitation current PI of a single-phase induction motor of the present invention will be described in further detail below with reference to the drawings and embodiments.
[0026] like figure 1 As shown, the adjustment system used in the method for adjusting the current PI control parameters of a single-phase induction motor of the present invention is composed of a controller 1, a power drive unit 2, a single-phase induction motor 3, and a current detection sensor 4, wherein the The controller 1 is composed of a comparator 111, a proportional device 112, and an integrator 113; the output end of the comparator 111 is connected to the input end of the proportional device 112 and the input end of the integrator 113 respectively, and the output end of the proportional device 112 and the integrator 113 are respectively connected. The output end of the power drive unit 2 is connected to the input end of the power drive uni...
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The invention discloses a single-phase induction motor exciting current proportional-integral (PI) control parameter adjusting method. An adjusting system used by the adjusting method consists of a controller, a power drive unit, a single-phase induction motor and a current detection sensor, wherein the controller consists of a comparator, a proportioner and an integrator. The adjusting method comprises the steps of adopting the current detection sensor to detect an actual current signal; using the comparator to receive the actual current signal and a given current command signal and output an error signal; using the proportioner and the integrator to receive the error signal and output a proportional control signal and an integral control signal respectively; using the power drive unit to receive the control signals and output excitation voltage; using the single-phase induction motor to receive current produced by the excitation voltage. The single-phase induction motor exciting current PI control parameter adjusting method is scientific and easy to perform, convenient to adjust, time-saving, labor-saving, strong in purposiveness, high in accuracy and capable of providing an accurate basis for current control design and debugging of the single-phase induction motor and accordingly obtaining good static performance and dynamic performance.
Description
technical field [0001] The invention relates to an excitation current system and a control method of a single-phase induction motor, in particular to a method for adjusting a control parameter of the excitation current PI of a single-phase induction motor. Background technique [0002] The excitation current control of single-phase induction motor must adopt closed-loop control to obtain excellent current control performance. Only by qualitatively understanding the controlled object can we decide what kind of controller to design, and only by quantitatively identifying the controlled object parameters can the controller parameters be adjusted accurately. At present, the known controllers in the prior art, such as the widely used PI (proportional-integral) controller, do not first determine the parameters of the controlled object, but directly adjust the proportional control parameters and Integral control parameters. Therefore, the adjustment of the controller parameters i...
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Inventor 张懿魏海峰冯友兵
Owner 舜华电气(昆山)有限公司